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/*
* linux/arch/h8300/kernel/ptrace_h8s.c
* ptrace cpu depend helper functions
*
* Yoshinori Sato <ysato@users.sourceforge.jp>
*
* This file is subject to the terms and conditions of the GNU General
* Public License. See the file COPYING in the main directory of
* this archive for more details.
*/
#include <linux/linkage.h>
#include <linux/sched/signal.h>
#include <linux/errno.h>
#include <asm/ptrace.h>
#define CCR_MASK 0x6f
#define EXR_TRACE 0x80
/* disable singlestep */
void user_disable_single_step(struct task_struct *child)
{
unsigned char exr;
exr = h8300_get_reg(child, PT_EXR);
exr &= ~EXR_TRACE;
h8300_put_reg(child, PT_EXR, exr);
}
/* enable singlestep */
void user_enable_single_step(struct task_struct *child)
{
unsigned char exr;
exr = h8300_get_reg(child, PT_EXR);
exr |= EXR_TRACE;
h8300_put_reg(child, PT_EXR, exr);
}
asmlinkage void trace_trap(unsigned long bp)
{
(void)bp;
force_sig(SIGTRAP, current);
}
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